|Album/Single|Performer|Year|Variant|Notes|
|---|---|---|---|---|
|The English and Scottish Popular Ballads vol 3|Ewan MacColl|1956|Gil Morice|The earliest known professional recording (8'37").|
|Blood and Roses Vol 2|Ewan MacColl|1981|Child Maurice|This is a different version from MacColl's 1956 recording.|
|Right of Passage|Martin Carthy|1988|Bill Norrie||
|Kornog|Kornog|2000|Child Noryce|The only known version by a French band.|
|The Furrowed Field|Damien Barber|2000|Bill Norrie||
|Songs|Spiers and Boden|2005|Child Morris||
|At Ruskin Mill|Martin Carthy|2005|Bill Norrie|The longest recorded version (9'06").|

Question: how many albums are performed by martin carthy or ewan maccoll?
Answer: 4